[OT] Re: Use of Referer header

[Ben Souther <bs...@fwdco.com>]

On Wed, 2004-11-10 at 12:52, Ben Souther wrote:
> The browser generates the HTTP headers and there are some rules
> governing when they are to be sent.
> http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
> 
> This isn't really Tomcat specific so I'm marking [OT]
> You may find more enthusiastic help on a JSP/Servlet list.
> 
> -Ben
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> On Wed, 2004-11-10 at 12:30, Paul Taylor wrote:
> > I have a WebPage which can be called from two different webpages, and I 
> > wanted it to have a back button.
> > 
> > Originally I had the calling pages passing a parameter to tell the 
> > called page what called it. Then someone pointed
> > out <%=request.getHeader("REFERER")%> to m. This works much better.
> > 
> > But I have 2 questions:
> > 1. Where are these header values defined I've not beeen able to find a 
> > good source.
> > 2.  It worked when coming from my pages but I then tried going to 
> > another page (e.g www.sun.com) and then pasting in the url and it just 
> > returned null. Does referer only apply when hyperlink from another  page ?
> > 
> > 
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